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linux-next/fs/hpfs/namei.c
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

629 lines
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// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/hpfs/namei.c
*
* Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
*
* adding & removing files & directories
*/
#include <linux/sched.h>
#include "hpfs_fn.h"
static void hpfs_update_directory_times(struct inode *dir)
{
time_t t = get_seconds();
if (t == dir->i_mtime.tv_sec &&
t == dir->i_ctime.tv_sec)
return;
dir->i_mtime.tv_sec = dir->i_ctime.tv_sec = t;
dir->i_mtime.tv_nsec = dir->i_ctime.tv_nsec = 0;
hpfs_write_inode_nolock(dir);
}
static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh0;
struct buffer_head *bh;
struct hpfs_dirent *de;
struct fnode *fnode;
struct dnode *dnode;
struct inode *result;
fnode_secno fno;
dnode_secno dno;
int r;
struct hpfs_dirent dee;
int err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
goto bail;
dnode = hpfs_alloc_dnode(dir->i_sb, fno, &dno, &qbh0);
if (!dnode)
goto bail1;
memset(&dee, 0, sizeof dee);
dee.directory = 1;
if (!(mode & 0222)) dee.read_only = 1;
/*dee.archive = 0;*/
dee.hidden = name[0] == '.';
dee.fnode = cpu_to_le32(fno);
dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
result = new_inode(dir->i_sb);
if (!result)
goto bail2;
hpfs_init_inode(result);
result->i_ino = fno;
hpfs_i(result)->i_parent_dir = dir->i_ino;
hpfs_i(result)->i_dno = dno;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
result->i_ctime.tv_nsec = 0;
result->i_mtime.tv_nsec = 0;
result->i_atime.tv_nsec = 0;
hpfs_i(result)->i_ea_size = 0;
result->i_mode |= S_IFDIR;
result->i_op = &hpfs_dir_iops;
result->i_fop = &hpfs_dir_ops;
result->i_blocks = 4;
result->i_size = 2048;
set_nlink(result, 2);
if (dee.read_only)
result->i_mode &= ~0222;
r = hpfs_add_dirent(dir, name, len, &dee);
if (r == 1)
goto bail3;
if (r == -1) {
err = -EEXIST;
goto bail3;
}
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = cpu_to_le32(dir->i_ino);
fnode->flags |= FNODE_dir;
fnode->btree.n_free_nodes = 7;
fnode->btree.n_used_nodes = 1;
fnode->btree.first_free = cpu_to_le16(0x14);
fnode->u.external[0].disk_secno = cpu_to_le32(dno);
fnode->u.external[0].file_secno = cpu_to_le32(-1);
dnode->root_dnode = 1;
dnode->up = cpu_to_le32(fno);
de = hpfs_add_de(dir->i_sb, dnode, "\001\001", 2, 0);
de->creation_date = de->write_date = de->read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
if (!(mode & 0222)) de->read_only = 1;
de->first = de->directory = 1;
/*de->hidden = de->system = 0;*/
de->fnode = cpu_to_le32(fno);
mark_buffer_dirty(bh);
brelse(bh);
hpfs_mark_4buffers_dirty(&qbh0);
hpfs_brelse4(&qbh0);
inc_nlink(dir);
insert_inode_hash(result);
if (!uid_eq(result->i_uid, current_fsuid()) ||
!gid_eq(result->i_gid, current_fsgid()) ||
result->i_mode != (mode | S_IFDIR)) {
result->i_uid = current_fsuid();
result->i_gid = current_fsgid();
result->i_mode = mode | S_IFDIR;
hpfs_write_inode_nolock(result);
}
hpfs_update_directory_times(dir);
d_instantiate(dentry, result);
hpfs_unlock(dir->i_sb);
return 0;
bail3:
iput(result);
bail2:
hpfs_brelse4(&qbh0);
hpfs_free_dnode(dir->i_sb, dno);
bail1:
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct inode *result = NULL;
struct buffer_head *bh;
struct fnode *fnode;
fnode_secno fno;
int r;
struct hpfs_dirent dee;
int err;
if ((err = hpfs_chk_name(name, &len)))
return err==-ENOENT ? -EINVAL : err;
hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
goto bail;
memset(&dee, 0, sizeof dee);
if (!(mode & 0222)) dee.read_only = 1;
dee.archive = 1;
dee.hidden = name[0] == '.';
dee.fnode = cpu_to_le32(fno);
dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
result = new_inode(dir->i_sb);
if (!result)
goto bail1;
hpfs_init_inode(result);
result->i_ino = fno;
result->i_mode |= S_IFREG;
result->i_mode &= ~0111;
result->i_op = &hpfs_file_iops;
result->i_fop = &hpfs_file_ops;
set_nlink(result, 1);
hpfs_i(result)->i_parent_dir = dir->i_ino;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
result->i_ctime.tv_nsec = 0;
result->i_mtime.tv_nsec = 0;
result->i_atime.tv_nsec = 0;
hpfs_i(result)->i_ea_size = 0;
if (dee.read_only)
result->i_mode &= ~0222;
result->i_blocks = 1;
result->i_size = 0;
result->i_data.a_ops = &hpfs_aops;
hpfs_i(result)->mmu_private = 0;
r = hpfs_add_dirent(dir, name, len, &dee);
if (r == 1)
goto bail2;
if (r == -1) {
err = -EEXIST;
goto bail2;
}
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = cpu_to_le32(dir->i_ino);
mark_buffer_dirty(bh);
brelse(bh);
insert_inode_hash(result);
if (!uid_eq(result->i_uid, current_fsuid()) ||
!gid_eq(result->i_gid, current_fsgid()) ||
result->i_mode != (mode | S_IFREG)) {
result->i_uid = current_fsuid();
result->i_gid = current_fsgid();
result->i_mode = mode | S_IFREG;
hpfs_write_inode_nolock(result);
}
hpfs_update_directory_times(dir);
d_instantiate(dentry, result);
hpfs_unlock(dir->i_sb);
return 0;
bail2:
iput(result);
bail1:
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
fnode_secno fno;
int r;
struct hpfs_dirent dee;
struct inode *result = NULL;
int err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
hpfs_lock(dir->i_sb);
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
goto bail;
memset(&dee, 0, sizeof dee);
if (!(mode & 0222)) dee.read_only = 1;
dee.archive = 1;
dee.hidden = name[0] == '.';
dee.fnode = cpu_to_le32(fno);
dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
result = new_inode(dir->i_sb);
if (!result)
goto bail1;
hpfs_init_inode(result);
result->i_ino = fno;
hpfs_i(result)->i_parent_dir = dir->i_ino;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
result->i_ctime.tv_nsec = 0;
result->i_mtime.tv_nsec = 0;
result->i_atime.tv_nsec = 0;
hpfs_i(result)->i_ea_size = 0;
result->i_uid = current_fsuid();
result->i_gid = current_fsgid();
set_nlink(result, 1);
result->i_size = 0;
result->i_blocks = 1;
init_special_inode(result, mode, rdev);
r = hpfs_add_dirent(dir, name, len, &dee);
if (r == 1)
goto bail2;
if (r == -1) {
err = -EEXIST;
goto bail2;
}
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = cpu_to_le32(dir->i_ino);
mark_buffer_dirty(bh);
insert_inode_hash(result);
hpfs_write_inode_nolock(result);
hpfs_update_directory_times(dir);
d_instantiate(dentry, result);
brelse(bh);
hpfs_unlock(dir->i_sb);
return 0;
bail2:
iput(result);
bail1:
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *symlink)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
fnode_secno fno;
int r;
struct hpfs_dirent dee;
struct inode *result;
int err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
hpfs_lock(dir->i_sb);
if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
hpfs_unlock(dir->i_sb);
return -EPERM;
}
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
if (!fnode)
goto bail;
memset(&dee, 0, sizeof dee);
dee.archive = 1;
dee.hidden = name[0] == '.';
dee.fnode = cpu_to_le32(fno);
dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(gmt_to_local(dir->i_sb, get_seconds()));
result = new_inode(dir->i_sb);
if (!result)
goto bail1;
result->i_ino = fno;
hpfs_init_inode(result);
hpfs_i(result)->i_parent_dir = dir->i_ino;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date));
result->i_ctime.tv_nsec = 0;
result->i_mtime.tv_nsec = 0;
result->i_atime.tv_nsec = 0;
hpfs_i(result)->i_ea_size = 0;
result->i_mode = S_IFLNK | 0777;
result->i_uid = current_fsuid();
result->i_gid = current_fsgid();
result->i_blocks = 1;
set_nlink(result, 1);
result->i_size = strlen(symlink);
inode_nohighmem(result);
result->i_op = &page_symlink_inode_operations;
result->i_data.a_ops = &hpfs_symlink_aops;
r = hpfs_add_dirent(dir, name, len, &dee);
if (r == 1)
goto bail2;
if (r == -1) {
err = -EEXIST;
goto bail2;
}
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = cpu_to_le32(dir->i_ino);
hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink));
mark_buffer_dirty(bh);
brelse(bh);
insert_inode_hash(result);
hpfs_write_inode_nolock(result);
hpfs_update_directory_times(dir);
d_instantiate(dentry, result);
hpfs_unlock(dir->i_sb);
return 0;
bail2:
iput(result);
bail1:
brelse(bh);
hpfs_free_sectors(dir->i_sb, fno, 1);
bail:
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = d_inode(dentry);
dnode_secno dno;
int r;
int err;
hpfs_lock(dir->i_sb);
hpfs_adjust_length(name, &len);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -EISDIR;
if (de->directory)
goto out1;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2: /* no space for deleting */
err = -ENOSPC;
break;
default:
drop_nlink(inode);
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
if (!err)
hpfs_update_directory_times(dir);
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
{
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
struct inode *inode = d_inode(dentry);
dnode_secno dno;
int n_items = 0;
int err;
int r;
hpfs_adjust_length(name, &len);
hpfs_lock(dir->i_sb);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
err = -EPERM;
if (de->first)
goto out1;
err = -ENOTDIR;
if (!de->directory)
goto out1;
hpfs_count_dnodes(dir->i_sb, hpfs_i(inode)->i_dno, NULL, NULL, &n_items);
err = -ENOTEMPTY;
if (n_items)
goto out1;
r = hpfs_remove_dirent(dir, dno, de, &qbh, 1);
switch (r) {
case 1:
hpfs_error(dir->i_sb, "there was error when removing dirent");
err = -EFSERROR;
break;
case 2:
err = -ENOSPC;
break;
default:
drop_nlink(dir);
clear_nlink(inode);
err = 0;
}
goto out;
out1:
hpfs_brelse4(&qbh);
out:
if (!err)
hpfs_update_directory_times(dir);
hpfs_unlock(dir->i_sb);
return err;
}
static int hpfs_symlink_readpage(struct file *file, struct page *page)
{
char *link = page_address(page);
struct inode *i = page->mapping->host;
struct fnode *fnode;
struct buffer_head *bh;
int err;
err = -EIO;
hpfs_lock(i->i_sb);
if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh)))
goto fail;
err = hpfs_read_ea(i->i_sb, fnode, "SYMLINK", link, PAGE_SIZE);
brelse(bh);
if (err)
goto fail;
hpfs_unlock(i->i_sb);
SetPageUptodate(page);
unlock_page(page);
return 0;
fail:
hpfs_unlock(i->i_sb);
SetPageError(page);
unlock_page(page);
return err;
}
const struct address_space_operations hpfs_symlink_aops = {
.readpage = hpfs_symlink_readpage
};
static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
const unsigned char *old_name = old_dentry->d_name.name;
unsigned old_len = old_dentry->d_name.len;
const unsigned char *new_name = new_dentry->d_name.name;
unsigned new_len = new_dentry->d_name.len;
struct inode *i = d_inode(old_dentry);
struct inode *new_inode = d_inode(new_dentry);
struct quad_buffer_head qbh, qbh1;
struct hpfs_dirent *dep, *nde;
struct hpfs_dirent de;
dnode_secno dno;
int r;
struct buffer_head *bh;
struct fnode *fnode;
int err;
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
if ((err = hpfs_chk_name(new_name, &new_len))) return err;
err = 0;
hpfs_adjust_length(old_name, &old_len);
hpfs_lock(i->i_sb);
/* order doesn't matter, due to VFS exclusion */
/* Erm? Moving over the empty non-busy directory is perfectly legal */
if (new_inode && S_ISDIR(new_inode->i_mode)) {
err = -EINVAL;
goto end1;
}
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
err = -ENOENT;
goto end1;
}
copy_de(&de, dep);
de.hidden = new_name[0] == '.';
if (new_inode) {
int r;
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
clear_nlink(new_inode);
copy_de(nde, &de);
memcpy(nde->name, new_name, new_len);
hpfs_mark_4buffers_dirty(&qbh1);
hpfs_brelse4(&qbh1);
goto end;
}
hpfs_error(new_dir->i_sb, "hpfs_rename: could not find dirent");
err = -EFSERROR;
goto end1;
}
err = r == 2 ? -ENOSPC : r == 1 ? -EFSERROR : 0;
goto end1;
}
if (new_dir == old_dir) hpfs_brelse4(&qbh);
if ((r = hpfs_add_dirent(new_dir, new_name, new_len, &de))) {
if (r == -1) hpfs_error(new_dir->i_sb, "hpfs_rename: dirent already exists!");
err = r == 1 ? -ENOSPC : -EFSERROR;
if (new_dir != old_dir) hpfs_brelse4(&qbh);
goto end1;
}
if (new_dir == old_dir)
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
err = -ENOENT;
goto end1;
}
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 0))) {
hpfs_error(i->i_sb, "hpfs_rename: could not remove dirent");
err = r == 2 ? -ENOSPC : -EFSERROR;
goto end1;
}
end:
hpfs_i(i)->i_parent_dir = new_dir->i_ino;
if (S_ISDIR(i->i_mode)) {
inc_nlink(new_dir);
drop_nlink(old_dir);
}
if ((fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) {
fnode->up = cpu_to_le32(new_dir->i_ino);
fnode->len = new_len;
memcpy(fnode->name, new_name, new_len>15?15:new_len);
if (new_len < 15) memset(&fnode->name[new_len], 0, 15 - new_len);
mark_buffer_dirty(bh);
brelse(bh);
}
end1:
if (!err) {
hpfs_update_directory_times(old_dir);
hpfs_update_directory_times(new_dir);
}
hpfs_unlock(i->i_sb);
return err;
}
const struct inode_operations hpfs_dir_iops =
{
.create = hpfs_create,
.lookup = hpfs_lookup,
.unlink = hpfs_unlink,
.symlink = hpfs_symlink,
.mkdir = hpfs_mkdir,
.rmdir = hpfs_rmdir,
.mknod = hpfs_mknod,
.rename = hpfs_rename,
.setattr = hpfs_setattr,
};
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